Service Hotline
+86 13564958513
The 1x6mm double insulated twin core fire resistant solar cable represents an advanced solution in photovoltaic (PV) system connectivity, integrating the benefits of double insulation and fire - resistant properties with the standard advantages of twin core solar cables. Its unique design makes it particularly suitable for scenarios where enhanced safety and electrical protection are paramount.
I. Specialized Structure and Material Composition
1.1 Conductors
Similar to other high - quality solar cables, the conductors of this 1x6mm double insulated twin core cable are crafted from high - purity oxygen - free copper, with a purity often exceeding 99.97%. This ensures minimal electrical resistance, enabling efficient transmission of direct current (DC) power generated by solar panels. The copper conductors are usually tin - plated, which not only improves conductivity but also provides excellent protection against oxidation, crucial for maintaining performance in outdoor PV environments. The stranded construction of the conductors offers flexibility, facilitating installation around complex structures, through conduits, and within solar panel arrays.
1.2 Double Insulation
Inner Insulation Layer: The inner insulation layer is typically made of cross - linked polyethylene (XLPE) or cross - linked polyolefin (XLPO), materials renowned for their outstanding electrical isolation properties. This layer effectively prevents DC current leakage, ensuring the safety and efficiency of the PV system. It can operate stably within a wide temperature range from - 40°C to + 90°C and withstand short - term temperature spikes up to + 120°C, making the cable suitable for diverse climates.
Outer Insulation Layer: An additional insulation layer is added on top of the inner one, providing an extra barrier for enhanced electrical protection. This outer insulation layer is also designed to offer mechanical protection, safeguarding the inner insulation and conductors from physical damage during installation and operation. The combination of these two insulation layers significantly reduces the risk of electrical short - circuits and improves the overall reliability of the cable.
1.3 Fire - Resistant Outer Sheath
The outer sheath of the cable is constructed from a specialized fire - resistant material. Typically, it is made of a halogen - free, flame - retardant thermoplastic elastomer (TPE) compound. This material is engineered to self - extinguish when exposed to fire, preventing the spread of flames along the cable. In the event of a fire incident near the PV system, the fire - resistant outer sheath helps contain the fire, protecting the cable and minimizing potential damage to the PV installation. Moreover, the outer sheath also retains its physical and electrical properties even when exposed to high temperatures for a short period, ensuring that the cable can continue to function safely during and after a fire - related event. Additionally, the outer sheath still provides the standard protection against UV radiation, moisture, and abrasion, ensuring the cable's long - term durability in outdoor environments.
II. Technical Specifications
Parameter | Details |
Cross - Sectional Area per Core | 6mm² |
Total Cross - Sectional Area | 12mm² |
Rated Voltage | Usually 1000V DC or 1500V DC |
Current Rating (90°C) | 41A per core, 82A in total |
DC Resistance (20°C) | ≤3.08Ω/km per core |
Overall Diameter | Slightly larger than standard 6mm² twin core cables due to double insulation, approximately 9 - 10mm |
Minimum Bend Radius | 6 - 8 times the cable diameter (54 - 80mm) |
Fire Resistance Standards | Complies with international standards such as IEC 60332 - 1 - 2 (for single - flame vertical propagation test), IEC 60332 - 3 - 24 (for flame spread on bunched cables) |
Certifications | TÜV EN 50618 (with fire - resistant requirements), IEC 62930, UL 4703, RoHS |
III. Distinctive Performance Advantages
3.1 Enhanced Electrical Safety
The double insulation feature of the cable provides an extra layer of protection against electrical hazards. It significantly reduces the risk of electric shock for installers and maintenance personnel, as well as the likelihood of electrical short - circuits within the PV system. In commercial or industrial PV installations where there are multiple people working around the system, this enhanced safety can prevent accidents and ensure the well - being of the workforce.
3.2 Fire - Resistant Reliability
In the event of a fire, the fire - resistant outer sheath of the cable plays a crucial role in protecting the PV system. It can prevent the fire from spreading along the cable, reducing the potential damage to the solar panels, inverters, and other components. This reliability is especially important in areas where fire risks are higher, such as industrial facilities, urban rooftops with close - proximity buildings, or regions prone to wildfires. By containing the fire, the cable helps minimize downtime and repair costs associated with PV system damage caused by fires.
3.3 Efficient Power Transmission
With a total current - carrying capacity of 82A at 90°C, the 1x6mm double insulated twin core fire resistant solar cable can efficiently handle the power output of larger residential or small - to - medium - sized commercial PV systems. Its low - resistance conductors, combined with the high - quality insulation, ensure that power loss during transmission is minimized. Whether it's transmitting power from solar panels on a rooftop to an inverter or from an inverter to the electrical grid, the cable maintains efficient power transfer, maximizing the energy harvested from the sun.
3.4 Compatibility and Versatility
This cable is highly compatible with a wide range of PV system components, including common solar panels, inverters, and charge controllers. Its standard technical specifications make it suitable for both new PV installations and the upgrade of existing systems. Whether it's a simple residential solar setup or a complex commercial project, the 1x6mm double insulated twin core fire resistant solar cable can be easily integrated, providing a reliable power connection while meeting the specific safety requirements of the application.
3.5 Long - Term Durability
Despite the additional insulation and fire - resistant features, the cable is built to last. The materials used in its construction are resistant to environmental factors such as UV radiation, moisture, and abrasion. The double insulation helps protect the conductors from degradation, while the fire - resistant outer sheath remains durable under normal operating conditions. With a service life typically ranging from 15 - 25 years, the cable offers a cost - effective solution for PV system owners, reducing the need for frequent replacements and maintenance.
IV. Application Scenarios
4.1 Industrial and Commercial Buildings
In industrial facilities and large commercial buildings, where there are higher risks of electrical accidents and fires due to the presence of various electrical equipment and potential flammable materials, the 1x6mm double insulated twin core fire resistant solar cable is an ideal choice. For example, in a manufacturing plant with a rooftop solar installation, this cable can safely transmit the power generated by the solar panels while providing the necessary fire protection. Its enhanced electrical safety features also ensure the safety of the workers in the facility.
4.2 Urban Rooftop Solar Installations
In urban areas, where buildings are closely packed together, the risk of a fire spreading quickly is higher. Rooftop solar installations in such areas require cables that can offer fire resistance. The 1x6mm double insulated twin core fire resistant solar cable can be used to connect solar panels on urban rooftops, protecting the PV system and neighboring buildings in case of a fire. Its double insulation also provides an added layer of safety in the crowded and often busy urban environment.
4.3 Areas Prone to Wildfires
In regions prone to wildfires, such as areas with dry vegetation and high temperatures, PV systems need to be equipped with fire - resistant components. The 1x6mm double insulated twin core fire resistant solar cable can withstand the heat and flames associated with wildfires to a certain extent, protecting the solar installation. This allows for the continued operation of the PV system even in the face of wildfire threats, ensuring a stable power supply and reducing the potential for significant damage to the system.
4.4 Large - Scale Residential Developments
In large - scale residential developments with multiple solar - powered homes, safety is a top priority. The double insulation of the cable provides enhanced protection against electrical hazards, reducing the risk of electric shock for residents. The fire - resistant feature also safeguards the entire residential community in case of a fire incident, preventing the spread of fire through the PV system's wiring and protecting the homes and their inhabitants.